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4               1842
Oct 6th     }     Water on heated metal

so bad a conductor of heat, that the
upper surface on which the drop is
thrown, almost instantly cools, and
lets the water down to the glass.  The
sudden evaporation then takes
place.

     Put the drop upon a piece of [[??**]] platen [[**??]] 
into which a hole [[overstrike**]] of [[**end overstrike]] was made of about
the 1/20 of an inch in diameter. Placed
this over the lamp, and when the heat
was up to that of redness, a drop of
water would not pass through until
the diameter was so much reduced,
as to be less than that of the hole; it
then fell through as if it had been
a piece of lead.
     If a large ladle be heated red
hot, and water poured cautiously
into it, the liquid will not pass through
holes of 1/10 of an inch in diameter.
The cause of this is evident, the cohesion
of the water remains nearly as strong
as before the heating, while the stratus
of steam prevents the water from [[circled**]] wetting [[**end circled]]
wetting or infilming the iron. [[end page]]

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                                  5
Oct. 6th 1842 } Arrangement of Long wire
                from Phil Hall to my study

I made an arrangement a few days since
of a long wire, extending from the electriccal 
machine in the Philos. Hall, to my study
on the opposite side of the campus. The wire
passed diagonally across the large lecture
room to the south west window
facing the Library, and thence to the southern
most window of the two upper ones of the
East end of the old college, then through
the long upper college hall to the [[overstrike**]] window [[**end overstrike]]
southerly window of the west end of the
college, to the door of my study.The whole
length of this wire is     feet.  It is
supported by silk ribbons fastened
to the side of the windows.
     This morning I completed a connect with
this wire and the ground, by plunging the end
next my study into the well, or rather by connecting
it with the wire which is already in the 
well for the experiments on atmosphere elect.,
(see last book), and by placing the end of a
copper wire with a plate of lead on it into
Mr. Clow's well, and then connecting this last
with the wire first mentioned.  Whence
small galvanometer of fine wire was placed
in the circuit in my study and a small
[[overstrike**]] galvano [[**end overstrike]] electromotor, consisting of a plate
of Lead of about a tenth of an inch in width,
and the end of the wire (1/20 of an inch) for a negation
element, the needle was deflected, showing
that this small galvanic arrangement was